Home / 15,502.70-21,396.81-9,213.86

Finding the Fourth Proportional to 15,502.70, 21,396.81 and 9,213.86

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Solution

The fourth proportional to 15,502.70, 21,396.81 and 9,213.86 is: 12,716.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.70 : 21,396.81 = 9,213.86 : x
  2. Step 2: Convert to fraction form
    15,502.70/21,396.81 = 9,213.86/x
  3. Step 3: Cross multiply
    15,502.70x = 21,396.81 × 9,213.86
  4. Step 4: Simplify right side
    15,502.70x = 197,147,211.79
  5. Step 5: Solve for x
    x = 197,147,211.79/15,502.70
  6. Step 6: Final answer
    x = 12,716.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.